CN115932376A - Under-voltage fault diagnosis method, system, terminal equipment and storage medium - Google Patents

Under-voltage fault diagnosis method, system, terminal equipment and storage medium Download PDF

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Publication number
CN115932376A
CN115932376A CN202310088982.3A CN202310088982A CN115932376A CN 115932376 A CN115932376 A CN 115932376A CN 202310088982 A CN202310088982 A CN 202310088982A CN 115932376 A CN115932376 A CN 115932376A
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voltage
time
undervoltage
component
power
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张尔新
王鹏
许林
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Chongqing Seres New Energy Automobile Design Institute Co Ltd
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Chongqing Seres New Energy Automobile Design Institute Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location

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Abstract

The application provides an under-voltage fault diagnosis method, a system, a terminal device and a storage medium, wherein the under-voltage fault diagnosis method comprises the following steps: receiving a power-on completion signal of a component to be tested, and acquiring current first time; detecting a voltage signal of the component to be detected from the first time; calculating the under-voltage duration that the voltage signal of the component to be tested is smaller than the preset voltage after the first time; and outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration. By the method, the influence of the objectively existing time length lower than the preset voltage in the power-on process on the calculation of the undervoltage time length is avoided, and false alarm is avoided.

Description

Under-voltage fault diagnosis method, system, terminal equipment and storage medium
Technical Field
The present disclosure relates generally to the field of under-voltage diagnosis technologies, and in particular, to an under-voltage fault diagnosis method, system, terminal device, and storage medium.
Background
On new energy electric vehicles, the types and functions of high-voltage devices are more and more important, so that the rationality and accuracy of fault diagnosis logic of the high-voltage devices are more and more important;
at present, the high-voltage and undervoltage fault diagnosis logic of a high-voltage device is that the high-voltage device starts to detect the voltage of a high-voltage side when being electrified at low voltage, the condition that the voltage of the high-voltage device is lower than an undervoltage fault threshold value objectively exists in the electrifying process, the undervoltage time is counted into the undervoltage time, and the undervoltage time is compared with a set time to determine whether the fault occurs, so that the judgment result is not consistent with the actual condition easily, the condition of false alarm occurs, and the normal use of a user is influenced.
Disclosure of Invention
In view of the defects or shortcomings that false alarms are easy to occur in the prior art and normal use of users is affected, it is desirable to provide an undervoltage fault diagnosis method, system, terminal device and storage medium which can solve the above technical problems.
The present application provides in a first aspect an under-voltage fault diagnosis method, including:
receiving a power-on completion signal of a component to be tested, and acquiring current first time;
detecting a voltage signal of the component to be detected from the first time;
calculating the under-voltage duration that the voltage signal of the component to be tested is smaller than the preset voltage after the first time;
and outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration.
According to the technical scheme provided by the embodiment of the application, the power-on completion signal is generated by a power-on module, and the power-on module is used for:
receiving a power-on instruction, and powering on the component to be tested;
detecting the inner side voltage and the outer side voltage of a power supply module, wherein the power supply module is used for supplying power to the component to be detected;
and generating the electrifying completion signal when the inner side voltage is judged to be equal to the outer side voltage.
According to the technical scheme that this application embodiment provided, since the very first time begins, detect after the voltage signal of the components and parts that await measuring, still include: receiving a power-off indication signal of the component to be tested, and acquiring the current second time;
the calculation is carried out after the first time, the voltage signal of the component to be tested is less than the undervoltage duration of the preset voltage, and the calculation comprises the following steps: and calculating the under-voltage time length of the voltage signal of the component to be tested from the first time to the second time.
According to the technical scheme provided by the embodiment of the application, the calculation is from after the first time to before the second time, the voltage signal of the component to be tested is less than the under-voltage duration of the preset voltage, and the calculation includes:
calculating the under-voltage sub-time length of the voltage signal of the component to be tested, which is smaller than the preset voltage each time;
and solving the sum of all under-voltage sub-durations from the first time to the second time to obtain the under-voltage duration.
According to the technical scheme provided by the embodiment of the application, calculating every time the voltage signal of the component to be tested is less than the under-voltage sub-time length of the preset voltage comprises:
calculating all target time when the voltage signal of the component to be tested is equal to the preset voltage;
taking the time length between two adjacent target time lengths as a target sub-time length;
and selecting at least one time point in the target sub-time length, and taking the target sub-time length as an under-voltage sub-time length when the voltage value corresponding to the time point is judged to be smaller than the preset voltage.
According to the technical scheme provided by the embodiment of the application, the power-off indication signal is generated by a power-off module, and the power-off module is used for: and receiving a power-off command, powering off the component to be tested, and generating the power-off indication signal.
According to the technical scheme provided by the embodiment of the application, the undervoltage fault information comprises alarm information and/or undervoltage information; the undervoltage information comprises the undervoltage duration and/or each undervoltage time period corresponding to the undervoltage duration.
A second aspect of the present application provides an undervoltage fault diagnosis system, including:
the acquisition module is used for receiving a power-on completion signal of the component to be tested and acquiring current first time;
a detection module to: detecting a voltage signal of the component to be detected from the first time;
the fault judgment module is used for calculating the under-voltage time length of the voltage signal of the component to be detected, which is less than the preset voltage, after the first time; and outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration.
A third aspect of the present application provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the under-voltage fault diagnosis method as described above when executing the computer program.
A fourth aspect of the present application provides a computer-readable storage medium having a computer program which, when executed by a processor, implements the steps of the under-voltage fault diagnosis method as described above.
The beneficial effect of this application lies in: firstly, when a power-on completion signal is received, acquiring current first time; calculating the under-voltage duration that the voltage signal of the component to be tested is smaller than the preset voltage after the first time; and finally, outputting the undervoltage fault information by judging whether the undervoltage duration is greater than the preset duration. Therefore, by adding a precondition for calculating the undervoltage time, namely, starting to detect the component to be detected after the power-on is finished, the condition that the time which is objectively present in the power-on process and is lower than the preset voltage influences the calculation of the undervoltage time is avoided; meanwhile, after each time the power-on completion signal is received, the under-voltage fault diagnosis is executed, namely, one power-on and power-off process is taken as one diagnosis period, so that final detection precision cannot be influenced even if power-on and power-off operations are repeated for many times, and the condition of false alarm is avoided.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a flowchart of an under-voltage fault diagnosis method provided in the present application;
FIG. 2 is a schematic diagram of a voltage signal of a device under test in the prior art;
FIG. 3 is a schematic diagram of a voltage signal of a device under test according to the present application;
FIG. 4 is a schematic diagram of an under-voltage fault diagnostic system provided herein;
fig. 5 is a terminal device provided in the present application;
reference numbers in the figures:
1. an acquisition module; 2. a detection module; 3. a fault judgment module; 4. a power-on module; 5. and powering down the module.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
Referring to fig. 1, the undervoltage fault diagnosis method provided in this embodiment is applied to an undervoltage fault diagnosis system, where the undervoltage fault diagnosis system is connected to a device to be tested and is used to perform undervoltage fault diagnosis on the device to be tested.
The undervoltage fault diagnosis method comprises the following steps:
s100: receiving a power-on completion signal of a component to be tested, and acquiring current first time;
s200: detecting a voltage signal of the component to be detected from the first time;
s300: calculating the under-voltage time length of the voltage signal of the component to be tested, which is less than the preset voltage, after the first time;
s400: and outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration.
Specifically, the preset voltage is an under-voltage fault threshold value and can be set according to actual requirements.
Specifically, the component to be tested is a high-voltage component, such as a compressor, a thermal heater, and the like.
It should be further explained that, in the prior art, the under-voltage fault diagnosis logic is that the high-voltage device starts to detect the voltage on the high-voltage side when being powered on at low voltage, and there is a situation that the voltage of the high-voltage device is lower than the threshold of the under-voltage fault objectively in the power-on process, and the under-voltage time is counted in the part of the time, and the under-voltage time is compared with the set time to determine whether the fault occurs, so that the judgment result is not consistent with the actual situation, and the situation of false alarm occurs, which affects the normal use of the user. To facilitate understanding by those skilled in the art, the description is given by way of specific examples:
for example, as shown in fig. 2, the undervoltage fault threshold is a voltage x, that is, when the voltage value of the component to be tested is lower than the undervoltage fault threshold x, it indicates that the component to be tested is in an undervoltage state; as can be seen in fig. 2, at time point a, the component to be tested starts to be powered on, and points H1, H2, and H3 indicate that the voltage value of the current component to be tested is equal to the undervoltage fault threshold x;
therefore, the time length t between the time point A and the time point B is obtained 1 Counting the time length of the undervoltage; similarly, in the next period, the time length t between the time point E and the time point F 3 Counting the time length of the undervoltage again; in the process of repeatedly powering on and powering off, the calculated under-voltage time length and the real under-voltage time length continuously increase in deviation, and finally, when the under-voltage time length with larger deviation is compared with the set time length, the judgment result is easy to be inconsistent with the real situation.
Based on this, the application provides an under-voltage fault diagnosis method, which includes the steps that when a power-on completion signal is received, the current first time is obtained; calculating the under-voltage duration that the voltage signal of the component to be tested is smaller than the preset voltage after the first time; and finally, outputting the undervoltage fault information by judging that the undervoltage duration is greater than the preset duration.
For example, as shown in FIG. 3, point G1 indicates the completion of power-up, and the time for obtaining point G1 is thenIs a first time; calculating the undervoltage time length that the voltage signal of the component to be tested is smaller than the preset voltage (namely the undervoltage fault threshold value x) after the first time, and avoiding the time length t 1 Influence is generated on the calculation of the under-voltage time; finally, outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration; similarly, in the next period, the new first time is obtained by obtaining the new electrifying completion signal, so that the time length t in the period is avoided 2 The calculation of the undervoltage duration of the next period is affected.
Therefore, the method for diagnosing the undervoltage fault adds the precondition of calculating the undervoltage time length, namely, the component to be detected starts to be detected after the power-on is finished; the influence on the calculation of the undervoltage time length caused by the fact that the time length objectively existing in the power-on process is lower than the preset voltage is avoided; meanwhile, after a new power-on completion signal is received, the undervoltage fault diagnosis is executed, namely, a power-on and power-off process is taken as a diagnosis period, so that final detection precision cannot be influenced even if power-on and power-off operations are repeated for many times, and the condition of false alarm is avoided.
In some embodiments, the under-voltage fault diagnosis system is further connected with a power-on module, the power-on module is connected with a power supply module, and the power supply module is used for supplying power to the component to be tested;
the power-on completion signal is generated by a power-on module, and the power-on module is used for:
receiving a power-on instruction, and powering on the component to be tested;
detecting the inner side voltage and the outer side voltage of a power supply module, wherein the power supply module is used for supplying power to the component to be detected;
and generating the electrifying completion signal when the inner side voltage is judged to be equal to the outer side voltage.
Specifically, the power supply module is, for example, a battery pack relay;
specifically, when the power-on module detects that the inner voltage of the power supply module is equal to the outer voltage, that is, the voltage tends to be stable, indicating that power-on is completed; at the moment, the power-on module generates and sends a power-on completion signal; and then when the undervoltage fault system acquires the power-on completion signal, acquiring the current first time.
In the steps, the power-on module detects the inner side voltage and the outer side voltage of the power supply module, so that the time for completing power-on can be directly and accurately judged, the identification efficiency can be improved, and the calculation complexity can be reduced.
In some embodiments, after detecting the voltage signal of the device under test from the first time, the method further includes: receiving a power-off indication signal of the component to be tested, and acquiring the current second time;
after the calculation is finished at the first time, the voltage signal of the component to be tested is smaller than the undervoltage duration of the preset voltage, and the method comprises the following steps: and calculating the under-voltage duration of the voltage signal of the component to be tested from the first time to the second time.
The second precondition for calculating the undervoltage duration is added in the steps, so that the detection precision is further improved, and the condition of false alarm is avoided. For the purpose of illustrating the technical principles of the present application, fig. 2 and 3 are still used as examples for illustration.
In the prior art, as shown in FIG. 2, the D time point represents the completion of power-down, and the time length t between the C time point and the D time point 2 The voltage values in the range are all smaller than the undervoltage fault threshold value x, so that the duration t is known 2 The result is counted into the under-voltage duration, thereby further causing the judgment result to be inconsistent with the real situation.
In the present application, as shown in fig. 3, G2 indicates that power-off is started, and at this time, a second time corresponding to a G2 point is obtained; and calculating the voltage signal of the component to be detected to be less than the under-voltage duration of the preset voltage from the time after the first time to the time before the second time, namely acquiring the under-voltage duration of which the voltage signal between the G1 point and the G2 point is less than the preset voltage, so that the influence of the objectively existing duration of being lower than the preset voltage in the power-on process and the power-off process on the calculation of the under-voltage duration is avoided, and the detection precision is further improved.
In some embodiments, the calculating that the voltage signal of the component to be tested is less than the under-voltage duration of the preset voltage from after the first time to before the second time includes:
calculating the under-voltage sub-time length of each time that the voltage signal of the component to be tested is smaller than the preset voltage;
and solving the sum of all under-voltage sub-durations from the first time to the second time to obtain the under-voltage duration.
The under-voltage sub-time length obtained in the above step is beneficial to visually determining the under-voltage process and the under-voltage rule of the component to be tested when the component to be tested fails, for example, the times of obtaining all under-voltage sub-time lengths, the time rule of each under-voltage sub-time length, and the like; on the other hand, the total under-voltage duration is convenient to calculate.
In some embodiments, the calculating the under-voltage sub-period when the voltage signal of the device to be tested is smaller than the preset voltage each time includes:
calculating all target time when the voltage signal of the component to be tested is equal to the preset voltage;
taking the time length between two adjacent target time lengths as a target sub-time length;
and selecting at least one time point in the target sub-time length, and taking the target sub-time length as an under-voltage sub-time length when the voltage value corresponding to the time point is judged to be smaller than the preset voltage.
In the above steps, the calculation amount and the occupation of calculation resources are reduced and the calculation efficiency is improved by determining the target sub-time length and combining the point selection judgment mode.
In some embodiments, the undervoltage fault diagnosis system is further connected to a power-down module, and the power-down indication signal is generated by the power-down module, and the power-down module is configured to: and receiving a power-off instruction, powering off the component to be tested, and generating the power-off indication signal.
And when the power-off module receives a power-off instruction, the power-off module executes power-off operation on the component to be tested, generates and outputs the power-off indication signal, namely the component to be tested is in a power-off starting state at the moment, and acquires the current second time when the power-off indication signal is received by the under-voltage fault diagnosis system.
In some embodiments, the undervoltage fault information includes alarm information and/or undervoltage information; the undervoltage information comprises the undervoltage duration and/or each undervoltage time period corresponding to the undervoltage duration. Further, the under-voltage time period is time information corresponding to the under-voltage sub-time period, and for example, the time information is: 5-5, namely the undervoltage time period is from five thirty-fifth minutes to five thirty-sixth minutes.
From this, when the components and parts that await measuring break down, can acquire the specific conditions of under-voltage time and corresponding under-voltage time quantum fast to in the very first time acquire fault information, be favorable to improving the efficiency of troubleshooting.
Example 2
Fig. 4 is a structural diagram of an under-voltage fault diagnosis system provided in this embodiment, wherein a dashed-line frame portion is a structure of the under-voltage fault diagnosis system. As shown in fig. 4, the system includes:
the device comprises an acquisition module 1, a power-on completion signal and a power-on completion signal, wherein the acquisition module 1 is used for receiving a power-on completion signal of a component to be tested and acquiring current first time;
the detection module 2 is used for detecting a voltage signal of the component to be detected from the first time;
the fault judgment module 3 is used for calculating the undervoltage duration that the voltage signal of the component to be tested is smaller than the preset voltage after the first time; and outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration.
In some embodiments, the undervoltage fault diagnosis system is connected to a power-on module 4, the power-on completion signal is generated by the power-on module 4, and the power-on module 4 is configured to:
receiving a power-on instruction, and powering on the component to be tested;
detecting the inner side voltage and the outer side voltage of a power supply module, wherein the power supply module is used for supplying power to the component to be detected;
and generating the electrifying completion signal when the inner side voltage is judged to be equal to the outer side voltage.
In some embodiments, the obtaining module 1 is further configured to: after detecting the voltage signal of the component to be detected from the first time, receiving a power-off indication signal of the component to be detected, and acquiring a current second time;
the fault judgment module 3 is configured to realize the function that the voltage signal of the component to be tested is smaller than the undervoltage duration of the preset voltage after the first time is calculated in the following way:
the calculation is that after the first time, the voltage signal of the component to be tested is smaller than the undervoltage duration of the preset voltage, and the calculation is that after the first time and before the second time, the voltage signal of the component to be tested is smaller than the undervoltage duration of the preset voltage.
In some embodiments, the fault determining module 3 is configured to calculate a function that the voltage signal of the component to be tested is less than an under-voltage duration of a preset voltage from after the first time to before the second time in the following manner:
calculating the under-voltage sub-time length of each time that the voltage signal of the component to be tested is smaller than the preset voltage;
and solving the sum of all under-voltage sub-durations from the first time to the second time to obtain the under-voltage duration.
In some embodiments, the fault determining module 3 is configured to implement the function of calculating the under-voltage sub-time length when the voltage signal of the component to be tested is smaller than the preset voltage each time in the following manner:
calculating all target time when the voltage signal of the component to be tested is equal to the preset voltage;
taking the time length between two adjacent target time lengths as a target sub-time length;
and selecting at least one time point in the target sub-time length, and taking the target sub-time length as an under-voltage sub-time length when the voltage value corresponding to the time point is judged to be smaller than the preset voltage.
In some embodiments, the undervoltage fault diagnosis system is connected with a lower electrical module 5, and the lower electrical module 5 is used for: and receiving a power-off instruction, powering off the component to be tested, and generating the power-off indication signal.
In some embodiments, the fault information includes alarm information and/or undervoltage information; the undervoltage information comprises the undervoltage duration and/or each undervoltage time period corresponding to the undervoltage duration.
Example 3
The present embodiment provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the under-voltage fault diagnosis method described above are implemented.
As shown in fig. 5, the terminal device 500 includes a Central Processing Unit (CPU) 501 that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 502 or a program loaded from a storage section into a Random Access Memory (RAM) 503. In a Random Access Memory (RAM) 503, various programs and data necessary for system operation are also stored. A Central Processing Unit (CPU) 501, a Read Only Memory (ROM) 502, and a Random Access Memory (RAM) 503 are connected to each other via a bus 504. An input/output (I/O) interface 505 is also connected to bus 504.
The following components are connected to an input/output (I/O) interface 505: an input portion 506 including a keyboard, a mouse, and the like; an output portion 507 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The drives are also connected to input/output (I/O) interfaces 505 as needed. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.
In particular, the process described above with reference to the flow chart of fig. 1 may be implemented as a computer software program according to an embodiment of the invention. For example, embodiment 1 of the invention comprises a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication section, and/or installed from a removable medium. The above-described functions defined in the system of the present application are executed when the computer program is executed by the Central Processing Unit (CPU) 501.
Example 4
The present embodiment provides a computer-readable storage medium having a computer program which, when being executed by a processor, implements the undervoltage fault diagnosis method steps as described above.
It should be noted that the computer readable medium shown in the present invention can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present invention may be implemented by software or hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves. The described units or modules may also be provided in a processor, and may be described as: a processor comprises an acquisition module, a control module;
wherein the names of such units or modules do not in some way constitute a limitation on the unit or module itself;
as another aspect, the present application also provides a computer-readable medium, which may be contained in the electronic device described in the above embodiments; or may be separate and not incorporated into the electronic device. The computer readable medium carries one or more programs, which when executed by the electronic device, cause the electronic device to implement the under-voltage fault diagnosis method according to the embodiment:
s100: receiving a power-on completion signal of a component to be tested, and acquiring current first time;
s200: detecting a voltage signal of the component to be detected from the first time;
s300: calculating the under-voltage duration that the voltage signal of the component to be tested is smaller than the preset voltage after the first time;
s400: and outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Moreover, although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (10)

1. An undervoltage fault diagnosis method, comprising:
receiving a power-on completion signal of a component to be tested, and acquiring current first time;
detecting a voltage signal of the component to be detected from the first time;
calculating the under-voltage duration that the voltage signal of the component to be tested is smaller than the preset voltage after the first time;
and outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration.
2. The undervoltage fault diagnosis method according to claim 1, wherein the power-up completion signal is generated by a power-up module, the power-up module being configured to:
receiving a power-on instruction, and powering on the component to be tested;
detecting the inner side voltage and the outer side voltage of a power supply module, wherein the power supply module is used for supplying power to the component to be detected;
and generating the electrifying completion signal when the inner side voltage is judged to be equal to the outer side voltage.
3. The undervoltage fault diagnosis method according to claim 1, further comprising, after detecting the voltage signal of the device under test from the first time, the steps of: receiving a power-off indication signal of the component to be tested, and acquiring the current second time;
the calculation is carried out after the first time, the voltage signal of the component to be tested is less than the undervoltage duration of the preset voltage, and the calculation comprises the following steps: and calculating the under-voltage duration of the voltage signal of the component to be tested from the first time to the second time.
4. The undervoltage fault diagnosis method according to claim 3, wherein the calculating a period of undervoltage during which the voltage signal of the component to be tested is less than a preset voltage from after the first time to before the second time includes:
calculating the under-voltage sub-time length of each time that the voltage signal of the component to be tested is smaller than the preset voltage;
and solving the sum of all under-voltage sub-durations from the first time to the second time to obtain the under-voltage duration.
5. The undervoltage fault diagnosis method according to claim 4, wherein the calculating the undervoltage sub-time length that the voltage signal of the device to be tested is smaller than the preset voltage each time comprises:
calculating all target time when the voltage signal of the component to be tested is equal to the preset voltage;
taking the time length between two adjacent target time lengths as a target sub-time length;
and selecting at least one time point in the target sub-time length, and when the voltage value corresponding to the time point is judged to be smaller than the preset voltage, taking the target sub-time length as an under-voltage sub-time length.
6. The undervoltage fault diagnosis method according to claim 3, wherein the power-down indication signal is generated by a power-down module configured to: and receiving a power-off command, powering off the component to be tested, and generating the power-off indication signal.
7. The undervoltage fault diagnosis method according to any of claims 1-6, characterized in that the undervoltage fault information comprises alarm information and/or undervoltage information; the undervoltage information comprises the undervoltage duration and/or each undervoltage time period corresponding to the undervoltage duration.
8. An undervoltage fault diagnostic system, comprising:
the acquisition module is used for receiving a power-on completion signal of the component to be tested and acquiring current first time;
the detection module is used for detecting a voltage signal of the component to be detected from the first time;
the fault judgment module is used for calculating the under-voltage duration that the voltage signal of the component to be tested is smaller than the preset voltage after the first time; and outputting undervoltage fault information when the undervoltage duration is judged to be greater than the preset duration.
9. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the undervoltage fault diagnosis method steps of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium having a computer program, the computer program, when being executed by a processor, is adapted to carry out the steps of the under-voltage fault diagnosis method according to any one of claims 1 to 7.
CN202310088982.3A 2023-02-03 2023-02-03 Under-voltage fault diagnosis method, system, terminal equipment and storage medium Pending CN115932376A (en)

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